Hi my chicken has had a sinus infection for FOUR MONTHS now. She has been treated with baytril and doxycycline. She's 'ok', but still has a big puffy sinus and bubbly eye. I just got a script for a human eye drop treatment for me (I don't need it now) - the chemical name is chloramphenicol. Has anyone used this on their chickens? Is it safe? I live in Australia, so that's why I'm using the chemical name. In Australia it is called 'chlorsig'. Any insight on what to do would be appreciated. I've tried everything, from flushing her sinuses out, squeezing out the infection, etc. Thanks!